<div class="navigation">
            <%= show_tab %>
   			<a class="<%=@tab1%>" href="/tab/borrowbook">借书/还书</a>
   			<!--
   			<a class="<%=@tab3%>" href="/tab/teambuilding">TeamBuilding</a>
   			-->
   			<a class="<%=@tab2%>" href="/tab/comment">评论</a>
			<%if check_admin%>
			<a class="<%=@tab4%>" href="/tab/usermng">用户管理</a>					
			<%end%>
			<div class="clearer"><span></span></div>
</div>